We need a little more information. Where are the panels?
Are the panels installed, one in each apartment? Then you need a main disconnect and OCP for the building and main disconnects and OCP in each panel.
Are the panels grouped together in the basement? Then you don't need a main for the building, but you still need mains and OCP in each panel.

BTW, what is a man house? A singlr family?

Earl


Earl